If you’re planning damp proofing in your Rhyl home, you might assume the problem can be solved entirely from the inside.
But the truth is, unless you fix the external causes of moisture first, even the best internal treatments — from silicone DPCs to tanking systems — may not work effectively.
At Weather Wise Solutions, we often find that failed damp proofing isn’t due to poor materials or workmanship, but because underlying external issues were never resolved before treatment began.
🧱 Why External Problems Cause Damp Proofing to Fail
A damp proof course is designed to stop rising moisture from the ground.
However, when external factors allow water to continually reach or sit above the DPC level, the system becomes ineffective.
Common examples include:
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High external ground levels – where soil, paths, or paving bridge the DPC
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Blocked or broken gutters – allowing rainwater to run down the walls
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Cracked render or pointing – letting water penetrate through the masonry
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Poor drainage or missing ACO channels – keeping ground water against the wall
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Defective downpipes or gulleys – leading to localised saturation
All of these can lead to bridging — where moisture bypasses the DPC altogether.
🧰 How to Get Damp Proofing Right (The Correct Sequence)
At Weather Wise Solutions Limited, we follow a simple, proven sequence to ensure treatments work long-term:
✅ Step 1 – External Inspection
Check gutters, drainage, pointing, and ground levels for obvious bridging or leaks.
✅ Step 2 – Fix the Outside First
Lower raised ground levels, install or repair ACO drains, repoint brickwork, and ensure downpipes discharge correctly.
✅ Step 3 – Internal Treatment
Only once the building fabric is protected externally do we apply internal damp proofing, tanking, or plastering systems.
✅ Step 4 – Post-Treatment Monitoring
We use moisture testing and humidity checks to confirm that the internal environment stays dry.
This approach ensures lasting results and prevents wasted investment.
🏡 Why Rhyl Homeowners Choose Weather Wise
As a family-run damp company, we believe in doing things right the first time.
We’re accredited members of the Federation of Damp, the Damp Proofing Association and Trust A Trader
Our CPD-qualified specialists provide insurance-backed guarantees on approved works and ensure that all damp proofing is carried out after a full external review.
👉 Book your free external and internal damp inspection in Rhyl:
https://weatherwiseuk.co.uk/pages/contact